32920110721 has 3 divisors (see below), whose sum is σ = 32920292161. Its totient is φ = 32919929282.

The previous prime is 32920110719. The next prime is 32920110781. The reversal of 32920110721 is 12701102923.

The square root of 32920110721 is 181439.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 12701102923 = 2879 ⋅4411637.

It is not a de Polignac number, because 32920110721 - 2¹ = 32920110719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 32920110721.

It is not an unprimeable number, because it can be changed into a prime (32920110781) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 90720 + ... + 272158.

Almost surely, 2^32920110721 is an apocalyptic number.

32920110721 is the 181439-th square number.

32920110721 is the 90720-th centered octagonal number.

It is an amenable number.

32920110721 is a deficient number, since it is larger than the sum of its proper divisors (181440).

32920110721 is an frugal number, since it uses more digits than its factorization.

32920110721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362878 (or 181439 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

It can be divided in two parts, 32920 and 110721, that added together give a square (143641 = 379²).

The spelling of 32920110721 in words is "thirty-two billion, nine hundred twenty million, one hundred ten thousand, seven hundred twenty-one".